Blind-fastener.



N0. 692,2 6I. Patented Feb. 4, I902.

L. B. GAYLOR.

BLIND FASTENER.

(Application filed Sept. 20. 1901.)

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EYERS CO, PHQTOLITHQ WASNINGYON. U. C.

N0. 692,26l. Patented Feb. 4, I902. L. B. GAYLOR.

BLIND FASTENER.

(Application filed Sept. 20, 1901.)

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wiineoo co ERS co, Pmmxumo, WASHINGTON n c UNTTED A, STATES PATENT OFFICE.

LEONARD B. GAYLOR, OF MOUNT VERNON, NEW YORK.

BLIND-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 692,261, dated February 4, 1 902.

Application filed September 20, 1901. Serial No. 75,767. (No model.)

To all whom it may concern:

Be it known that I, LEONARD B. GAYLOR, a citizen of the United States, and a resident of Mount Vernon, in the county of Westchester and State of New York, (having my post-office address No. 6 Rich avenue, Mount Vernon, New York,) have invented a new and useful Improvement in Blind-Fasteners, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 illustrates a plan view of the parts composing the invention, certain of the coacting parts being shown in horizontal section. Fig. 2 illustrates an elevation of the invention. Fig. 3 illustrates a vertical sectional view of one form of the apparatus, portions of the locking devices being shown in section. Fig. 4: illustrates a plan View, some what enlarged, of a single blind-fastener detached from other parts. Fig. 5 illustrates a sectional view of a modified construction.

A represents the casing of an ordinary window; B, the sill thereof; 0 C, the blinds, and D the hinges. These parts are or may be of any preferred construction.

The blind-fastener comprises two essential parts. They are what I will term the sillrod E and the blind-rod F. The sill-rod is provided with a plate G, to which it is pivoted at H, the plate being adapted to be fastened to the sill of the casing by screws I or in any other suitable manner. The blindrod F is likewise provided with a terminal K, adapted to be fastened to the blind, and a pivotal connection L. At the meeting ends between the rods E and F are the locking devices, as follows: The rod E has a casing M upon it, through holes in the ends or opposite sides of which the rod F passes.

N N are two levers which are or may be fulcrumed, as at 0, within holes or slots made in the casing M. Near the lower ends of the levers N N are made two holes which are slightly larger than the diameter of the rod F and generally conform in shape to the cross-section of the rod F.

P P are springs which encircle the end of the rod F within the casing M. These springs have greater interior diameter than the rod, and they abut, respectively, at one end against the sides of the lever N or N, as the case may be, whereby those levers are normally thrust inwardly. I

Q Q are two stops, which may be cross-pins or their equivalents, against which the lower ends of the levers N N strike when by reason of their upper ends being drawn together they have attained substantially a vertical position.

The operation of the apparatus is as follows: It will be noted that because the rod F is pivotally connected tothe blind and the rod E pivotally connected to the sill the blind is capable of uncontrolled swinging movement upon the hinges D,as usual, and that in so moving the two rods E and F, considered as a unit, assume different angles relative to the plane of the sill, and also that as the blind swings the two rods E and F must elongate by slipping past one another in one direction or collapse or telescope by reason of movement in the other direction, and that these movements are freely permitted, were it not for the locking devices about to be described, by the fact that the rod F can slide longitudinally through the holes made in the ends of the casing M. Whenever desired, this sliding movement may be arrested and the two rods firmly held in their then position by the clamping action of the sides of the holes through the levers N and N against the rod F when under the influence of the springs P P in a manner now well understood; yet this clamping action may be released and the rods unlocked relative to each other by drawing together the upper ends of the levers N and N, as by the pressure of the finger and thumb, until they attain substantially a vertical position. Thereupon the holes through the levers will have their axes parallel with the ads of the rod F, thus permitting free movement of it through the casingM and through both levers. It will be understood that one of the leversas, for instance, the lever Nprevents movement of the rod to the right, and the other, N, prevents movement of the rod to the left. In this way by exceedingly simple apparatus and by very simple manipulation thereof the blind may be closed and held rigidly in that position or may be fully opened or held at any intermediate angle, and in all positions the control of the blind will be absolute and rigid, so that rattling will be avoided.

In Fig. 5 I show a modified construction, in which the spring P is made all in one and located between the ends of the levers N and N, and the levers are fulcrumed at their lower ends, as at B, there being a slot S made for each of them in the upper side of the cas ing. The inner edges of the slots are so located that they will engage with the sides of the levers N and N when they have attained substantially a vertical positionin other words, a position in which the axes of the holes through the levers coincide with the axis of the rod F. The operation of the parts is substantially the same as that heretofore described.

It will be obvious to those who are familiar with this art that many modifications may be made in the details of construction of the apparatus without departing from the essentials of the invention. For instance, springs other than spiral may be used, and devices other than the peculiar form of levers shown by me, but having an equivalent function, obviously may be substituted, and the methods of pivotally connecting the rods E and F to the sill and blind, respectively, may be changed without departing from the essentials of the invention. Also the casing which contains the springs and locking-levers may be connected with the blind-rod F in such manner that the sill-rod E may slide through it instead of vice versa, as shown. Also it is not necessary that the rods should be of different shape. I prefer to make the sill-rod flat, as shown, for the sake of greater convenience and utility in constructing the parts.

Having described my invention, I claim A blind-fastener embodying a sill rod, means on its end whereby it may be pivotally connected to a window-sill, a blind-rod, means on its end whereby it may be pivotally connected to a blind, a casing on one of the rods,and spring-actuated locking devices substantially as described, adapted to engage with the other rod for the control of the blind,

inclosed within and protected by said casing.

- Signed at New York, in the county of New York and State of New York, this 17th day of September, 1901.

LEONARD B. GAYLOR. Witnesses:

PHILLIPS ABBOTT, WM. FOX. 

